netdev - [PATCH v1 net] lan743x: Remove MAC Reset from initialization

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Message-ID: <1545256515-16945-1-git-send-email-Bryan.Whitehead@microchip.com>
Date:   Wed, 19 Dec 2018 16:55:15 -0500
From:   Bryan Whitehead <Bryan.Whitehead@...rochip.com>
To:     <davem@...emloft.net>
CC:     <netdev@...r.kernel.org>, <UNGLinuxDriver@...rochip.com>
Subject: [PATCH v1 net] lan743x: Remove MAC Reset from initialization

The MAC Reset was noticed to erase important EEPROM settings.
It is also unnecessary since a chip wide reset was done earlier
in initialization, and that reset preserves EEPROM settings.

There for this patch removes the unnecessary MAC specific reset.

Signed-off-by: Bryan Whitehead <Bryan.Whitehead@...rochip.com>
---
 drivers/net/ethernet/microchip/lan743x_main.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c
index 1ba8ea0..20c9377 100644
--- a/drivers/net/ethernet/microchip/lan743x_main.c
+++ b/drivers/net/ethernet/microchip/lan743x_main.c
@@ -802,14 +802,8 @@ static int lan743x_mac_init(struct lan743x_adapter *adapter)
 	u32 mac_addr_hi = 0;
 	u32 mac_addr_lo = 0;
 	u32 data;
-	int ret;
 
 	netdev = adapter->netdev;
-	lan743x_csr_write(adapter, MAC_CR, MAC_CR_RST_);
-	ret = lan743x_csr_wait_for_bit(adapter, MAC_CR, MAC_CR_RST_,
-				       0, 1000, 20000, 100);
-	if (ret)
-		return ret;
 
 	/* setup auto duplex, and speed detection */
 	data = lan743x_csr_read(adapter, MAC_CR);
-- 
2.7.4